參數(shù)資料
型號(hào): MPC852TZT80
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 80 MHz, RISC PROCESSOR, PBGA256
封裝: PLASTIC, BGA-256
文件頁(yè)數(shù): 56/72頁(yè)
文件大小: 1210K
代理商: MPC852TZT80
6
MPC852T Hardware Specifications
MOTOROLA
Thermal Characteristics
4
Thermal Characteristics
Table 3 shows the thermal characteristics for the MPC852T.
Table 3. MPC852T Thermal Resistance Data
Rating
Environment
Symbol
Value
Unit
Junction to ambient 1
1 Junction temperature is a function of on-chip power dissipation, package thermal resistance, mounting
site (board) temperature, ambient temperature, air flow, power dissipation of other components on the
board, and board thermal resistance.
Natural convection
Single layer board (1s)
RθJA
2
2 Per SEMI G38-87 and JEDEC JESD51-2 with the single layer board horizontal
49
°C/W
Four layer board (2s2p)
RθJMA
3
3 Per JEDEC JESD51-6 with the board horizontal
32
Air flow (200 ft/min)
Single layer board (1s)
RθJMA
41
Four layer board (2s2p)
RθJMA
29
Junction to board 4
4 Thermal resistance between the die and the printed circuit board per JEDEC JESD51-8. Board
temperature is measured on the top surface of the board near the package.
RθJB
24
Junction to case 5
5 Indicates the average thermal resistance between the die and the case top surface as measured by the
cold plate method (MIL SPEC-883 Method 1012.1) with the cold plate temperature used for the case
temperature. For exposed pad packages where the pad would be expected to be soldered, junction to
case thermal resistance is a simulated value from the junction to the exposed pad without contact
resistance.
RθJC
13
Junction to package top 6
6 Thermal characterization parameter indicating the temperature difference between package top and the
junction temperature per JEDEC JESD51-2
Natural convection
ΨJT
3
Air flow (200 ft/min)
ΨJT
2
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